Using the political decline of Northern Song dynasty as the background, this is the story of the Four Great Constables upholding justice while punishing the wicked.
Heartless / Shing Ngai-yue / Mou Ching
Song Zhi-yin
Iron Fist / Tit Yau-ha / Fok Yi
Lam Ruo-fei
Chaser / Tsui Leuk-sheung
Teet Yau-Tung
Cold Blood / Lang Ling-hei
Ling Siu Dou
Chukot Ching-ngor
Piu Suet
Kuk Yin Hung
Lam Po-tian
Ling Lok-shi
Ling Siu-kwat
Choi King
大理寺卿
